• PyQt5 QDialog对话框(QMessageBox,QInputDialog,QFontDialog,QFileDialog,QColorDialog)

    PyQt5 QDialog对话框

    QDialog类图

    在这里插入图片描述

    QDialog

    import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt

class MyDialogWindow(QMainWindow):
    def __init__(self, parent=None):
        super(MyDialogWindow, self).__init__(parent)
        self.setWindowTitle("Dialog Demo")
        self.resize(350, 300)

        self.btn = QPushButton(self)
        self.btn.setText("弹出对话框")
        self.btn.move(50, 50)
        self.btn.clicked.connect(self.showdialog)

    def showdialog(self):
        dialog = QDialog()
        btn = QPushButton("OK" ,dialog)
        btn.move(50, 50)
        dialog.setWindowTitle("Dialog")
        dialog.setWindowModality(Qt.ApplicationModal)
        dialog.exec_()

if __name__ == "__main__":
    app = QApplication(sys.argv)
    win = MyDialogWindow()
    win.show()
    sys.exit(app.exec_())


    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31

    在这里插入图片描述

    QMessageBox

    import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt

class MyMessageBox(QWidget):
    def __init__(self):
        super(MyMessageBox, self).__init__()
        self.setWindowTitle("QMessageBox Demo")
        self.resize(300, 300)

        layout = QVBoxLayout()
        self.btn1 = QPushButton()
        self.btn1.setText("弹出信息消息框")
        self.btn1.clicked.connect(lambda:self.showmessagebox(1))
        layout.addWidget(self.btn1)

        self.btn2 = QPushButton("弹出问答消息框", self)
        self.btn2.clicked.connect(lambda:self.showmessagebox(2))
        layout.addWidget(self.btn2)

        self.btn3 = QPushButton("弹出警告消息框", self)
        self.btn3.clicked.connect(lambda:self.showmessagebox(3))
        layout.addWidget(self.btn3)

        self.btn4 = QPushButton("弹出严重错误框", self)
        self.btn4.clicked.connect(lambda:self.showmessagebox(4))
        layout.addWidget(self.btn4)

        self.btn5 = QPushButton("弹出关于消息框", self)
        self.btn5.clicked.connect(lambda:self.showmessagebox(5))
        layout.addWidget(self.btn5)

        self.setLayout(layout)

    def showmessagebox(self, index):
        if index == 1:
            reply = QMessageBox.information(self, "信息标题", "信息消息正文", QMessageBox.Yes|QMessageBox.No, QMessageBox.Yes)
            print(reply)
        elif index == 2:
            reply = QMessageBox.question(self, "问答标题", "问答消息文本", QMessageBox.Ok|QMessageBox.Cancel, QMessageBox.Ok)
            print(reply)
        elif index == 3:
            reply =QMessageBox.warning(self, "警告标题", "警告消息内容", QMessageBox.Ok|QMessageBox.Cancel, QMessageBox.Ok)
            print(reply)
        elif index == 4:
            reply = QMessageBox.critical(self, "严重标题","严重错误消息内容", QMessageBox.Yes|QMessageBox.No, QMessageBox.Yes)
            print(reply)
        elif index == 5:
            reply = QMessageBox.about(self, "关于标题", "关于消息对话框文本")
            print(reply)

            
if __name__ == "__main__":
    app = QApplication(sys.argv)
    win = MyMessageBox()
    win.show()
    sys.exit(app.exec_())

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31
    • 32
    • 33
    • 34
    • 35
    • 36
    • 37
    • 38
    • 39
    • 40
    • 41
    • 42
    • 43
    • 44
    • 45
    • 46
    • 47
    • 48
    • 49
    • 50
    • 51
    • 52
    • 53
    • 54
    • 55
    • 56
    • 57
    • 58
    • 59

    在这里插入图片描述

    QInputDialog

    import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt

class MyInputDialogWindow(QWidget):
    def __init__(self, parent=None):
        super(MyInputDialogWindow, self).__init__(parent)
        
        layout = QFormLayout()

        self.btn1 = QPushButton("获得列表里的选项")
        self.btn1.clicked.connect(self.getItem)
        self.le1 = QLineEdit()
        layout.addRow(self.btn1, self.le1)

        self.btn2 = QPushButton("获得字符串")
        self.btn2.clicked.connect(self.getText)
        self.le2 = QLineEdit()
        layout.addRow(self.btn2, self.le2)

        self.btn3 = QPushButton("获得整数")
        self.btn3.clicked.connect(self.getInt)
        self.le3 = QLineEdit()
        layout.addRow(self.btn3, self.le3)

        self.btn4 = QPushButton("获得浮点数")
        self.btn4.clicked.connect(self.getDouble)
        self.le4 = QLineEdit()
        layout.addRow(self.btn4, self.le4)
        
        self.setLayout(layout)
        self.resize(350, 300)
        self.setWindowTitle("QInputDialog Demo")
        
        
    def getItem(self):
        items = ("C", "C++", "Java", "Python", "C#")
        item, ok = QInputDialog.getItem(self, "select input dialog", "语言列表", items, 0, False)
        if ok and item:
            self.le1.setText(item)

    def getText(self):
        text, ok = QInputDialog.getText(self, 'Text Input Dialog', '输入姓名：')
        if ok:
            self.le2.setText(str(text))

    def getInt(self):
        num,ok = QInputDialog.getInt(self, "integer input dialog", "输入数字")
        if ok:
            self.le3.setText(str(num))
    def getDouble(self):
        num,ok = QInputDialog.getDouble(self, "double input dialog", "输入浮点数")
        if ok:
            self.le4.setText(str(num))

    
if __name__ == "__main__":
    app = QApplication(sys.argv)
    win = MyInputDialogWindow()
    win.show()
    sys.exit(app.exec_())

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31
    • 32
    • 33
    • 34
    • 35
    • 36
    • 37
    • 38
    • 39
    • 40
    • 41
    • 42
    • 43
    • 44
    • 45
    • 46
    • 47
    • 48
    • 49
    • 50
    • 51
    • 52
    • 53
    • 54
    • 55
    • 56
    • 57
    • 58
    • 59
    • 60
    • 61
    • 62
    • 63

    在这里插入图片描述

    QFontDialog

    import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt

class MyFontDialogDemo(QWidget):
    def __init__(self, parent=None):
        super(MyFontDialogDemo, self).__init__(parent)
        layout = QVBoxLayout()
        self.fontButton = QPushButton("选择字体")
        self.fontButton.clicked.connect(self.getFont)
        layout.addWidget(self.fontButton)
        self.fontLineEdit = QLabel("Hello,测试字体Demo")
        layout.addWidget(self.fontLineEdit)
        self.setLayout(layout)
        self.setWindowTitle("Font Dialog Demo")

    def getFont(self):
        font, ok = QFontDialog.getFont()
        if ok:
            self.fontLineEdit.setFont(font)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    win = MyFontDialogDemo()
    win.show()
    sys.exit(app.exec_())


    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29

    在这里插入图片描述

    QFileDialog

    import sys

from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt

class filedialogDemo(QWidget):
    def __init__(self, parent=None):
        super(filedialogDemo, self).__init__(parent)
        layout = QVBoxLayout()
        self.btn = QPushButton("加载图片")
        self.btn.clicked.connect(self.getfile)
        layout.addWidget(self.btn)
        self.le = QLabel("")
        layout.addWidget(self.le)
        self.btn1 = QPushButton("加载文本文件")
        self.btn1.clicked.connect(self.getfiles)
        layout.addWidget(self.btn1)
        self.contents = QTextEdit()
        layout.addWidget(self.contents)
        self.setLayout(layout)
        self.setWindowTitle("File Dialog Demo")
        
    def getfile(self):
        fname, aa = QFileDialog.getOpenFileName(self, 'Open file', 'C:\\', "Image files (*.jpg *.gif)")
        self.le.setPixmap(QPixmap(fname))
    
    def getfiles(self):
        dlg = QFileDialog()
        dlg.setFileMode(QFileDialog.AnyFile)
        dlg.setFilter(QDir.Files)
        if dlg.exec_():
            filenames = dlg.selectedFiles()
            f = open(filenames[0], 'r')
            with f:
                data = f.read()
                self.contents.setText(data)
                f.close()
                
if __name__ == "__main__":
    app = QApplication(sys.argv)
    win = filedialogDemo()
    win.show()
    sys.exit(app.exec_())

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31
    • 32
    • 33
    • 34
    • 35
    • 36
    • 37
    • 38
    • 39
    • 40
    • 41
    • 42
    • 43
    • 44
    • 45

    在这里插入图片描述

    QColorDialog

    import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt

class MyColorDialogWindow(QWidget):
    def __init__(self, parent=None):
        super(MyColorDialogWindow, self).__init__(parent)

        self.palette = QPalette()
        layout = QVBoxLayout()
        self.btn1 = QPushButton("设置背景颜色")
        self.btn1.clicked.connect(self.onSetBgColorClicked)
        layout.addWidget(self.btn1)

        self.btn2 = QPushButton("设置文本颜色")
        self.btn2.clicked.connect(self.onSetTxtColorClicked)
        layout.addWidget(self.btn2)

        self.label = QLabel("测试文本内容")
        self.label.setFixedSize(150, 50)
        self.label.setAlignment(Qt.AlignCenter)
        layout.addWidget(self.label)

        self.resize(380, 150)
        self.setWindowTitle("QColorDialog Demo")
        self.setLayout(layout)

    def onSetBgColorClicked(self):
        color = QColorDialog.getColor()
        self.palette.setColor(QPalette.Window, color)
        self.label.setAutoFillBackground(True)
        self.label.setPalette(self.palette)
        
    def onSetTxtColorClicked(self):
        color = QColorDialog.getColor()
        r,g,b,_ = color.getRgb()
        self.label.setStyleSheet("color:rgb({},{},{},255)".format(r,g,b))

        #self.palette.setColor(QPalette.WindowText, color)
        #self.label.setPalette(self.palette)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    win = MyColorDialogWindow()
    win.show()
    sys.exit(app.exec_())

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31
    • 32
    • 33
    • 34
    • 35
    • 36
    • 37
    • 38
    • 39
    • 40
    • 41
    • 42
    • 43
    • 44
    • 45
    • 46
    • 47
    • 48

    在这里插入图片描述

  • 相关阅读:
    Grafana+Prometheus打造运维监控系统（二）-数据获取篇-node_exporter
    羧酸-COOH功能化修饰红色荧光聚苯乙烯AIE微球的产品组成和保存条件
    展商企业【广东伟创科技开发有限公司】| 2024水科技大会暨技术装备成果展
    怎么处理zk或redis脑裂
    产品经理必看！提升效率的9款工具盘点，你都用过哪些？
    CSS入门基础学习（中）
    递归：x的n次幂
    在Spring Boot项目中使用JPA
    开源医疗大模型Llama3-Aloe-8B-Alpha，性能超越 MedAlpaca 和 PMC-LLaMA
    【Pytorch实用教程】nn.LogSoftmax的详细用法及公式
  • 原文地址：https://blog.csdn.net/u013420428/article/details/127978404